利用VLF/LF闪电定位系统数据,并结合多普勒雷达以及卫星云图资料,对2009~2010年较高纬度东北地区夏季的闪电与雷暴相关参数的关系进行了研究.结果表明:闪电多发生在雷达回波强度大于40dBz的区域,雷暴发生闪电时其30dBz雷达回波最大高度大于6km;在雷暴的演变过程中,闪电的峰值时间略滞后于30dBz雷达回波最大高度的峰值;闪电频数和30dBz雷达回波最大高度存在指数增长关系;闪电主要发生在云顶红外温度在210~240K的区域,在消散阶段,雷暴云云顶高度降低、红外温度较高.

The relationship between lightning activities and summer thunderstorms in the summer time during 2009 ~ 2010 in Northeast China was investigated by utilizing VLF/LF multi‐station network lightning data ,Doppler radar echo data and NCEP/CPC Global IR cloud‐top temperature data .T he results show that most of the lightning occurred in regions w here the radar echo exceeded 40 dBz , and the maximum height of 30 dBz radar echo of lightning‐producing thunderstorms exceeded 6 km .During the evolution of thunderstorms ,the peak time of flash rate slightly lagged behind the peak time of the max height of 30 dBz radar echo .The flash rate tended to increase exponentially with the maximum height of 30dBz radar echo .Lightning was observed to occur in regions with an IR cloud‐top temperature of 210~240 K ,and it seems that the IR cloud‐top temperature of lightning‐producing thunderstorms during the dissipation phase was warmer than that during other stages and that the height of c

利用MICAPS常规资料、NECP再分析资料、雷达回波资料，对2012年7月4-5日河南省驻马店暴雨过程进行诊断分析，资料表明：此次暴雨过程是受副热带高压边缘西南气流和中低层切变线的共同影响，高空槽后带来的冷空气与西南暖湿气流在淮河流域上空交汇，促使不稳定能量爆发，从而产生中小尺度强降水.在新一代天气雷达上，则表现为对流性降水回波，回波呈块状结构，强度大，中心强度为59 dBZ，对流高度12 km .从回波连续演变来看，整个回波云系随着低槽的东移南压，移速25 km/h .径向速度图上，最大负速度入流为-39 m/s，最大正速度出流为24 m/s，入流绝对值远大于出流绝对值，表明测站附近为气流辐合.垂直风廓线图上，最大风速高度6．7 km，最大风速风向198 deg，最大风速18．0 m/s，表明高层有西南气流加入，在4．6 km高度附近有一个明显的垂直切变线.

By using the MICAPS routine data,radar echo data,the process diagnosis and analysis of rainstorm in Zhumadian on July 4-5,2012 was carried out. The result shows as follows. The rainstorm process is affected by the edge of subtropical high and low level shear line southwest airflow,and the diffusion of cold air in South Huaihe basin,leads to a burst of unstabile energy,resulting in small scale heavy rainfall. In the new generation weather radar,it showed as precipitation echo with strong blocky structure,center intensity 59 dBZ and convective height 12 km. From the continuous evolution of the echo,echo structures are with low trough eastwards and southwards, moving speed 25 km/h. For radial velocity,the maximum negative speed inflow(Max 39 m/s),maximum speed outflow (Max 24 m/s),and the absolute value of inflow is much larger than outflow,which means a flow convergence near the station. For vertical wind profile graph,maximum wind velocity height was 6.7 km;maximum wind velocity and win

介绍了临近预报系统(SWAN)和甘肃省中小河流洪水和山洪地质灾害气象风险预警平台的产品特征及其在2012年5月10日甘肃岷县强对流天气过程中的应用。SWAN系统表明,在强回波影响岷县期间,监测到最大反射率因子达到50 dBZ以上,其对应的高度为9 km;风暴体内垂直积分含水量和回波顶高的极值分别达到15 kg/m2和18 km,表明风暴在影响岷县期间发展旺盛;TITAN风暴产品也较为准确地预测了风暴的发展方向和趋势;定量降水预报产品QPF对本次过程的降水落区预报较为准确,但是降水量级预报偏小。总体来看,SWAN系统在本次强对流天气过程中发挥了很好的监测预警功能。甘肃省中小河流洪水和山洪地质灾害气象风险预警平台在云图、雷达、自动区域站的多资料融合监测中也发挥了重要作用,其暴雨云团加强显示、降水估测等功能都对强对流风暴有很好的监测预警作用。

The products characteristics of Severe Weather Auto Nowcasting (SWAN)and the small and medium-sized rivers flooding and mountain torrents disasters meteorological warning platform in Gansu Province were introduced and their application in a strong con-vective weather process in Minxian county of Gansu Province on May 10,2012 was analyzed.SWAN system showed when the strong echo occurred in Minxian,the monitored maximum reflectivity factor reached more than 50 dBZ,and its corresponding height was 9 km.The vertical integrated liquid water content and echo top extreme value reached 15 kg/m2 and 18 km in the storm,respectively, which indicated that the strong storm developed actively when it went by Minxian.The storm products also predicted the development direction and trend accurately.The quantitative precipitation forecast products (QPF)forecasted rainfall area relatively accurate in this weather process,but the forecasted rainfall level was smaller.On the whole,SWAN system played a very